great news reporter, apparently he doesn't know how to spell hydrogen sulfide
hydrogen sulfide is H2S and we use it in chemistry to check for metal ions, it is also very toxic, here are some of the stuff it will do to you at certain concentrations
btw, ppm=parts per million
# 0.0047 ppm is the recognition threshold, the concentration at which 50% of humans can detect the characteristic odor of hydrogen sulfide [1], normally described as resembling "a rotten egg".
# 10-20 ppm is the borderline concentration for eye irritation.
# 50-100 ppm leads to eye damage.
# At 150-250 ppm the olfactory nerve is paralyzed after a few inhalations, and the sense of smell disappears, often together with awareness of danger,
# 320-530 ppm leads to pulmonary edema with the possibility of death.
# 530-1000 ppm causes strong stimulation of the central nervous system and rapid breathing, leading to loss of breathing;
* 800 ppm is the lethal concentration for 50% of humans for 5 minutes exposure(LC50).
# Concentrations over 1000 ppm cause immediate collapse with loss of breathing, even after inhalation of a single breath
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